Over the past weekend, I spoke at the Midsouth Homeschool Convention, which is a part of the Great Homeschool Conventions series. It was held in Memphis, TN, so pictures and tributes to Elvis were abundant everywhere except the convention itself. I didn’t give as many talks at this convention as is typical, so that left more time for my favorite part of a homeschool convention: talking with students and parents.
Since I am not selling anything at homeschool conventions these days, my booth in the exhibit hall looks rather odd. It consists of a plain black-and-white sign that just has my name on it, an empty table, two chairs, and me. In contrast to most of the other booths that try to attract people in with color banners, comfy couches, potted plants, and videos, mine looks pretty bare. The CEO of Home Educating Family thought it was just too bare, so he added one “decoration.” On my plain white sign, he wrote “The Doctor Is In” and gave me a sticky note that said “OUT.” When I left my booth, I could cover the word “In” with the sticky note. Perhaps it doesn’t sound funny to you, but I thought it was hilarious, and I used it the whole time I was there. I regret that I did not take a picture of it before I left.
Although the bulk of this post will deal with a question I got in one of my talks, I do want to mention one thing that really impressed me. It turns out that during the conference, some low-life broke into several of the vendors’ vans. While most vendors didn’t lose much, one vendor’s van was loaded with an iPad and some other important technology, so they were looking at a serious financial loss. In order to help them out, several other vendors took up a collection. Now these vendors are all competitors. If you buy a math course from one vendor, that probably means you won’t buy a math course from any other vendor. Nevertheless, the vendors all gave generously. That really impressed me. Even in business, Christians should put compassion first, and that’s what I saw happening in Memphis.
An infrequent but very entertaining commenter on this blog, Black Sheep, asked the following question:
In an effort to drop some pounds, I’ve started focusing on building muscle (instead of endurance) and therefore lifting weights. I understand the basic principle of why muscles get sore, but for me, and most people I know, 2 days after the work out seems to be FAR more painful than the day after. As with my other question, why is this, and is there anything I can do to prevent it?
I would like to use this blog post to answer her question.
There are three basic reasons why muscles get sore in response to exercise. First, there is a buildup of acid in muscles when they are forced to burn energy very quickly. The muscle soreness you experience during a workout is usually the result of acid buildup, but it quickly goes away as the acids are flushed out of your muscles.
The second reason is a bit more long-term. Your muscles work by contracting. In order for your muscles to contract, calcium must be imported into the muscle cell. When the muscle relaxes, the calcium leaves the cell. So repeatedly contracting and relaxing your muscles (which is what you do when you exercise) causes calcium to continually enter and leave the cell. This produces a swelling in the muscle tissue, and that causes inflammation. In addition, this constant import and export of calcium serves as a trigger for the cell to break down proteins and rebuild them so that they can do more. This ends up building up the muscle, but at the cost of some pain.
Neither of these effects explains what is happening in Black Sheep’s case, however. Black Sheep is experiencing Delayed Onset Muscle Soreness (DOMS), and it is the result of a completely different process.
I am on my way home from an incredible tour of New Zealand, South Korea, and Australia. I had great experiences in each country, and they will lead to several more blog posts. Even though I was most recently in Australia, I am not done reporting on my experiences in South Korea. I first want to finish my report on that country, and then I will discuss my wonderful time in Australia.
After speaking at the DCTY homeschooling convention in Seoul (which was fantastic) I spoke at KAIST church. To fully appreciate my experience there, you have to understand that KAIST is the main science and technology university in South Korea. Well before I knew I was going to travel to South Korea, I had heard of KAIST. It has an international reputation for producing not only good science, but also excellent graduates. It is not surprising, then, that KAIST is sometimes referred to as the MIT of South Korea.
The church service was held on the third floor of the student center, a building that sits on the university campus and was built by the university for its students. Imagine my surprise when I walked into the room in which the church service was held and saw this:
I am currently in New Zealand on a homeschooling tour arranged by the Firelight Foundation. This is not my first visit to this lovely country, and it most certainly won’t be my last. In 2006, my wife (Kathleen) and I traveled here to do our first “Kiwi” homeschooling tour, and in 2009, we came back here to celebrate our 25th wedding anniversary. Each time I am here, I am struck by two things. First, this has to be one of the most beautiful places on earth. The plant life is lush, the air smells amazing, and the landscape is truly breathtaking. Second, the people are incredible. Everyone is particularly friendly and helpful. They really give you the impression that they want to help you enjoy your stay here. Of course, working with homeschoolers in New Zealand is a double blessing, because I get to see how home education produces such stellar students regardless of the country in which it is taking place.
My first stop on this New Zealand homeschooling tour was the lovely town of Palmerston North. Situated in the Southern part of the North Island, it is New Zealand’s seventh largest city, and the venue at which I spoke was packed. I gave a total of six talks (two in one evening and four during the next day), and as you would expect from an audience of homeschoolers, there were some excellent questions. I want to discuss two of them.
In my previous post, I discussed the cane toad invasion of Australia. While studies of the invasion have shown a new mechanism of selection that is distinct from classic natural selection, they have also shown how limited the range of evolutionary change in cane toads really is. This is consistent with the creationist view and quite contrary to the evolutionist view.
In this post, I want to discuss the changes that the cane toads have produced in other Australian animals. As you might expect, as a foreign species spreads across an ecosystem, it is going to have an effect on the already-established species there. In general, one expects the effects to be negative, but that doesn’t always seem to be the case. Indeed, a large study designed to assess the damage that the cane toad invasion has done to the already-established animals in Australia says:1
Overall, some Australian native species (mostly large predators) have declined due to cane toads; others (especially species formerly consumed by those predators) have benefited; and for yet others, effects are minor or are mediated indirectly rather than through direct interactions with the invasive toads.
So in the end, it’s a bit of a mixed bag. However, what I find interesting are some of the details of how these animals have changed in response to the cane toad invasion.
A reader E-MAILed me asking about an article she had read regarding cane toads in Australia. The article seemed to have some implications regarding evolution, so she asked if I would look into it. Since I will be speaking to homeschoolers in Australia near the end of June, I wanted to learn more about this issue. As a result, I looked into it, and it is all quite fascinating.
Cane toads are not native to Australia. Indeed, there are no toads that are native to Australia. They were brought there from Hawaii in 1935 in order to control sugar cane pests in northeastern Queensland.1 Now you would have thought that those in charge would have learned from the famous rabbit fiasco that was recognized as a serious problem in Australia by the turn of the century, but apparently they did not. Instead, they brought the cane toad in to control the pests and, not surprisingly, it started to spread far beyond where it was originally brought. The map below shows you how incredibly far it has spread in only about 75 years.
Last weekend, I spoke at the MassHOPE convention. I have spoken there many times over the course of the past 15 years, and it is one of my favorite conventions. It is held in a great facility, and it is very well-organized. Also, while I was young, I used to spend a lot of time in Massachusetts because my father grew up there. It is always fun to go back and listen to people who talk like my dad.
I gave five talks while I was there. Two of them were on homeschooling. I dealt with elementary science in one of the talks and junior-high/high-school science in the other talk. In my elementary science talk, I stress how important mathematics is for science, and I tell the parents that while science is important, during the K-6 years, mathematics is even more important. Thus, if you want to stress anything during the K-6 years, stress the math. That will pay off huge dividends in science later on. As a result, while you should do some science in the K-6 years, you should do it only from time-to-time. You should be stressing mathematics, reading, and writing during that time in your child’s life.
What I find interesting is that most parents seem to instinctively know this already. I can’t tell you how many people come up to me after I give that talk and tell me that they have been doing just that for quite some time. However, they have always felt vaguely uneasy about only doing science from time-to-time and are glad that someone like me has validated what they are doing. I think this is an example of how parents really do know what’s best for their child’s education, even when they don’t have the benefit of advice from an “expert.”
My other three talks were on science. I talked about the scientific evidence for Christianity, about the prophecies in the Old Testament that have been fulfilled in both history and in the life of Christ, and about the amazing science that you find in the Bible. I got two questions from that last talk which are worth covering in this post.
Last Friday and Saturday, I spoke at the Association of Peoria Area Christian Home Educators (APACHE) conference. It was held in the Peoria Civic Center, which is a very nice facility. Interestingly enough, the home education convention was sharing the facility with a pool and darts convention, which led to some interesting overlap. For example, I wasn’t sure exactly where to go at first, and I ended up walking into an exhibit hall to see what was going on there. I figured I was in the wrong place when a saw a booth with a beer tap!
Once I found where I was supposed to be, I had a great time. Since I am not selling anything these days, I really don’t need a booth. However, the APACHE conference was kind enough to give me one, and it was nice. I put a small card table in the middle of the booth and just sat there, waiting for people who wanted to talk with me. I guess it seemed inviting, because a lot of people sat down and talked with me at length. I got to know several homeschooling parents as well as their children/students.
I ended up talking with two students who had graduated homeschool and are now in college. One was pursuing mechanical engineering, and the other was pursuing crop science, probably with an emphasis in genetics. It was great to hear how well they are doing in their coursework and how much they are enjoying science. Those kinds of conversations really lift the heart of this science educator.
I got two interesting questions that are worth discussing, both related to science.
I received an E-MAIL from a student a few days ago. He had just finished Stephen Hawking and Leonard Mlodinow’s book, The Grand Design, in which the authors claim that God is not necessary in order to explain the universe. While I have not read the book yet, reviews (even from non-Christian sources) are far from flattering.
The student informed me that Hawking and Mlodinow credit the Ionian Greeks with the discovery of natural laws. This confused him, because in my book, Exploring Creation with General Science, I make it very clear that modern science was born out of Christianity. This is because the concept that nature operates according to strict laws is a natural consequence of the fact that it was created by a Supreme Lawgiver. Without the concept of a law-giving Creator, there would have been no reason to search for natural laws. Indeed, as Dr. Stanley Jaki tells us:1
…the Christian belief in the Creator allowed a breakthrough in thinking about nature. Only a truly transcendental Creator could be thought of as being powerful enough to create a nature with autonomous laws
The search for the laws that govern nature was inspired by Christianity, and as a result, modern science is a product of Christianity.
So what of the Ionian Greeks? Did they do something related to natural laws? Not really. They did do something related to science, however, and their contribution should not be downplayed. Nevertheless, it needs to be put in the proper context.
Last weekend I spoke six times at the Midwest Homeschool Convention. It was an incredible conference. It definitely had the highest attendance of any conference at which I have spoken in the past couple of years. While there were a lot of people who were upset over the fact that Ken Ham had been disinvited from the conference, that didn’t seem to affect the attendance in any significant way. There were a few people who were wearing white buttons that said “I stand with Ken Ham,” but that was really the only visible effect of the controversy. For those who were upset at Mr. Ham’s disinvitation, I thought the buttons were an appropriate way to demonstrate their displeasure. They did not demean anyone else, and they did not disrupt the convention, but they showed displeasure. My hat goes off to whoever came up with that idea!
As is typical, I spoke on two broad subjects – homeschooling and Christian apologetics. One of my homeschooling talks was on how to homeschool at the high school level, and another was on the data that show how homeschooled students compare to non-homeschooled students academically and socially. I also gave one of my favorite talks there – “Be Open Minded, but Don’t Let Your Brain Fall Out.” It stresses the need for people to investigate multiple positions and learn to think critically while doing that. My Christian apologetics talks focused on fulfilled prophecy, design in nature, and the historical reliability of the Bible.
Not surprisingly, I was asked a number of excellent questions during my talks, and I want to focus on two of them. One deals with the studies that have been done on homeschooled students, and the other deals with probability arguments in the creation/evolution debate.